Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10 5/3/83; site iddic.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!houxm!houxz!vax135!cornell!uw-beaver!tektronix!orca!iddic!garyh
From: garyh@iddic.UUCP
Newsgroups: net.micro.cbm
Subject: Update to 1541 reliability update
Message-ID: <1762@iddic.UUCP>
Date: Fri, 27-Jul-84 02:57:24 EDT
Article-I.D.: iddic.1762
Posted: Fri Jul 27 02:57:24 1984
Date-Received: Sun, 22-Jul-84 06:08:14 EDT
Organization: Tektronix, Beaverton OR
Lines: 27

>>><<<
 
In my previous article (1750@iddic.uucp), I gave some hints on keeping the 1541
cool, and told how to fix drive squeaking problems. I've changed my mind about
a couple of things in that posting, so here they are:
 
In 'keeping the drive cool' hint no. 4, I mentioned tilting the bridge
rectifers towards the back of the unit for airflow, and to keep the small
electroytics near them cool. I keep the plastic top cover off my drive when
using it (more because of paranoia than because it's actually necessary), and
after looking at the location of the cooling vents in the top cover, I have
decided that if the top cover is on, it is NOT a good idea to tilt the
recifiers, as this will probably result in less rectifier cooling rather than
more.
 
When I mentioned lubricating the hub clamp washers, I said that 'I used a tiny
quantity of light high-quality grease; probably not the best choice actually'.
I used Lubriplate grease, more because I had it lying around the house, rather
than because of any inherent wonderfulness. I have decided that maybe a 'wet'
lubricant is preferable to a dry one; the grease will catch and hold any further
metal dust scraped off the washers. Also, it might help to take a fine file
and file down the edge of the spring a bit to kelp keep it from biting into
the washers. I haven't done this,  but will try it if/when I have to de-squeak
the drive again.
 
 
     Gary Hanson      Tektronix IDG